The activity of head-up breaststroke is good for the cervical spine, because in the process of breaststroke, the neck needs to be repeatedly tilted back, this situation can strengthen the muscles, fascia and ligaments of the back of the neck, by reducing the force on the vertebrae of the neck, it can well prevent the change of the curvature of the vertebrae of the neck, reduce the pressure inside the intervertebral disc, which is good for the later prevention of the straightening of the curvature of the cervical vertebrae, the retroflexion and the herniation of the intervertebral disc. After strengthening the muscles, fascia and ligaments in the back of the neck, it can also avoid muscle and fascia strain in the back of the neck, as well as avoid calcification of the ligaments in the back of the neck.